Across
- 1. Animal food.
- 7. New inventions; the science of industry.
- 8. An economy based on industry, not agriculture.
- 9. Land held to be used by everyone.
- 12. A supply of workers.
- 13. The essential materials needed in an industry to make a product.
- 14. A layer of gas above the Earth's surface that protects human beings from harmful rays of the sun.
- 15. Money used to invest in business.
Down
- 2. To use.
- 3. To feed on growing plants, such as grass.
- 4. A complete change in something; the overthrow of a government.
- 5. Unproductive; inadequate in performance.
- 6. An increase in the world's temperature.
- 10. Animal droppings used to fertilize land.
- 11. A group of animals distinguished by particular characteristics.